typedef struct
{
	BYTE    alpha;  /* alpha blend of color     */
	BYTE    r;      /* red component of color   */
	BYTE    g;      /* green component of color */
	BYTE    b;      /* blue component of color  */
}XA_OSGPalette;

typedef union
{
	XA_OSGPalette palette;
	DWORD         index;
}XA_OSGColor;
